Convert Shockwave Flash (.swf) to Matroska Video (.mkv) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .swf file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .mkv file when it's ready.
SWF (Shockwave Flash) is Adobe's discontinued multimedia container. MKV (Matroska Video) is an open, flexible video container that can hold virtually any combination of video, audio, subtitle, and metadata streams. Converting SWF to MKV extracts the Flash content and packages it in the most feature-rich open-source video container available, supporting multiple audio tracks, subtitle streams, chapters, and extensive metadata.
MKV is the preferred container for media archivists and enthusiasts because of its flexibility and open-source nature. It supports every major video and audio codec without licensing restrictions. For preserving Flash content with maximum metadata and stream flexibility, MKV is the optimal container choice.
MKV's ability to contain multiple audio streams, subtitle tracks, and chapter markers makes it the best archival container for multimedia content. When Flash content includes multiple audio tracks (e.g., different language narrations) or requires chapter markers for navigation, MKV accommodates these features while MP4 may have limitations.
MKV also supports virtually every codec without patent or licensing restrictions. The container can hold H.264, H.265, VP9, AV1, FLAC, Opus, and any other codec, making it future-proof for long-term archival. Flash content preserved in MKV can be remuxed to other containers later without re-encoding.
The conversion engine uses FFmpeg to decode the SWF container and re-encode into an MKV package. Video is encoded as H.264 or H.265 for high compression efficiency. Audio can be preserved losslessly (FLAC within MKV) or re-encoded as AAC/Opus. MKV metadata tags (title, date, description) are populated when possible. Chapter markers can be added for long-form Flash content that has natural section breaks.
MKV as a container imposes no quality constraints — the quality is determined by the codec settings chosen. H.264 at CRF 18-20 provides near-visually-lossless quality. FLAC audio within MKV preserves sound at full lossless fidelity. The source SWF content's inherent quality is the limiting factor, not the MKV container.
| Device | SWF | MKV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
SWF to MKV conversion packages Flash content in the most flexible open video container, supporting advanced features like multiple audio tracks, subtitles, and lossless audio for professional archival.
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Fungerer overalt
| No |
8MB free, 50MB Nitro
Alle nettlesere, alle enheter
| Egenskap | SWF | MKV |
|---|---|---|
| Fullt navn | Shockwave Flash | Matroska Video |
| Filendelse | .swf | .mkv |
| Best egnet for | Flash format | Multiple audio tracks |